Valeo 439664 Alternator

Valeo 439664 Alternator Overview

The Valeo 439664 alternator is a 12-volt charging system component built for vehicles that require a 140-amp output, internal fan design, clockwise rotation, and a 6-groove pulley. As part of the Valeo OE family, it is built as a 100% new unit for direct replacement use in charging system repairs.

Valeo has supplied original equipment electrical components since 1923, and this alternator reflects that OE-focused engineering. It is a strong match for Volkswagen Golf and Volkswagen Golf R applications that use the Valeo OE alternator design.

Key Features

• Part number: 439664
• 12-volt alternator with 140-amp amperage rating
• Internal fan type for integrated cooling
• Clockwise rotation direction
• 6-groove pulley configuration
• Aluminium housing material
• Valeo OE family construction
• Technical number: TG14C026

Product Details

This Valeo alternator is engineered for charging system performance in Volkswagen Golf and Volkswagen Golf R models that call for the OE-style Valeo unit. It is designed to replace the original alternator used on 2010-2014 Volkswagen Golf and 2012-2013 Volkswagen Golf R applications, including vehicles noted with the FWP pulley 56/6 configuration. The 439664 part number is also referenced by related OE and aftermarket numbers for the same application.

This part cross-references Bosch AL0834X for the same application.

What This Alternator Helps Address

• Battery warning lights caused by alternator output loss
• Low charging voltage during driving or idle
• Electrical system instability from a failing generator
• Reduced charging performance in Volkswagen Golf and Golf R applications
• Noise or wear associated with an aging alternator assembly

Installation Notes and Fitment

• Fits 2010-2014 Volkswagen Golf, N/A; VALEO IS THE OE SUPPLIER FOR THIS VEHICLE; FWP Pulley 56/6; 140 AMP; Alternator
• Fits 2010-2014 Volkswagen Golf, N/A; VALEO IS THE OE SUPPLIER FOR THIS VEHICLE; 140 AMP; Alternator
• Fits 2012-2013 Volkswagen Golf R, N/A; VALEO IS THE OE SUPPLIER FOR THIS VEHICLE; 140 AMP; Alternator
• Fits 2012-2013 Volkswagen Golf R, N/A; VALEO IS THE OE SUPPLIER FOR THIS VEHICLE; FWP Pulley 56/6; 140 AMP; Alternator

Verify pulley groove count, rotation direction, amperage rating, and OE reference before installation. Confirm the vehicle’s charging system requirements against the original unit to ensure the correct match for your Volkswagen Golf or Volkswagen Golf R repair.

Quality Assurance

Valeo is a long-standing OE supplier in electrical systems, and this alternator is built as a new replacement unit rather than a remanufactured part. That construction supports consistent charging performance and reduces the risk associated with reused internal components.